1. Mechanism for negative water balance during weightlessness: An hypothesis;Greenleaf;J Appl Physiol,1986
2. Compensatory changes during adaptation to the weightlessness environment;Leach;Physiologist,1970
3. Early cardiovascular adaptation to simulated zero gravity;Nixon;Respir Environ Exercise Physiol,1979
4. Changes in body fluid compartments during a 28-day bedrest;Fortney;Aviat Space Environ Med,1991